With an extremely wide pH application range, Durlon® 8400 can be used in process piping and equipment in chemical, pulp & paper and other general industrial applications. As a unique high-performance compressed sheet, Durlon® 8400 is also an excellent gasket material for use in steam, mild caustics and acids (in Class 150 and 300 service).
Composition: Durlon® 8400 contains high temperature phenolic fibres and minerals combined with high-grade nitrile (NBR) rubber. It exhibits higher temperature limits than aramid based materials and the handling and cutting characteristics are greatly improved over carbon and glass fibre products. Durlon® 8400 has a pH application range of 2 to 13 at room temperature, the widest any compressed sheet gasket material produced today.
Certifications: Navy Adhesion Test, California Proposition 65, RoHS Reach Declaration
Physical Properties:
Color: Gold
Fiber: Phenolic
Binder: NBR
Temperature:
Min: -100°F (-73°C)
Max: 800°F (427°C)
Continuous, max: 554°F (290°C)
Pressure, max: 1500 psi (103 bar)
Density: 106 lbs/ft3 (1.7 g/cc)
Compressibility: 8-16%
Recovery: 50%
Creep Relaxation: 25%
Tensile Strength: 1800 psi (12.4 MPa)
Sealability, cc/min ASTM F2378 (Nitrogen): 0.03
Sealability, ml/hr ASTM F37 (Fuel A): 0.01
Sealability, ml/hr ASTM F37 (Nitrogen): 0.3
Fluid Resistance – ASTM F146, IRM 903 oil, 5 hrs at 300°F (149°C)
Thickness Increase: 0-15%
Weight Increase: 15%
ASTM Fuel B 5 hrs at 70°F (21°C)
Thickness Increase: 0-10%
Weight Increase: 15%
Flexibility, ASTM F147: 8x
Volume Resistivity, ohm-cm, ASTM D257: 3.1 x 1013
Dielectric Breakdown, ASTM D149, kV/mm (V/mil): 14.6 (371)
Gasket Factors:
THICKNESS: 1/16″
m: 2.9
Y psi (MPa): 2410 (16.6)
Gb psi (MPa): 2000 (13.8)
a: 0.194
Gs psi (MPa): 340 (2.3)
THICKNESS: 1/8″
m: 4.5
Y psi (MPa): 3967 (27.4)
Gb psi (MPa): 1076 (7.4)
a: 0.289
Gs psi (MPa): 94 (0.7)